HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / VA

MARK NIEHAUS

INTERNAL MEDICINE

Medical school: WARREN ALPERT MEDICAL SCHOOL OF BROWN UNIVERSITY

Graduated: 2003

Also: PEDIATRIC MEDICINE

Offers telehealth

NPI: 1972541548

Practice Locations (5)

PRIVIA MEDICAL GROUP, LLC

950 N GLEBE RD, SUITE 700

ARLINGTON, VA 222034173

MARTHA JEFFERSON MEDICAL GROUP LLC

540 BELVEDERE BLVD, SUITE 100

CHARLOTTESVILLE, VA 229013215

4346542830

MARTHA JEFFERSON MEDICAL GROUP LLC

1646 PARK RIDGE DR

CROZET, VA 229323155

4346542760

MARTHA JEFFERSON MEDICAL GROUP LLC

1646 PARK RIDGE DR, SUITE A

CROZET, VA 229323155

4346545575

PRIVIA MEDICAL GROUP, LLC

8644 SUDLEY RD, SUITE 220

MANASSAS, VA 201104425

5713668845

Source: CMS National Downloadable File, September 2026.